Calculating-machine.



F. TRINKS. v CALCULATING MACHINE. APPLICATION FILED OUT. 21, 1908.

935,565. Patented Sept. 28, 1909.

3 SHEETS-SHEET 1;

P. TRiNKs. CALCULATING MACHINE.

APPLICATION FILED OUT. 21, 190B.

Patented Sept. 28, 1909;

3 SEE ETS SHEET 2,

F. THINKS.

CALCULATING MAGHINE.

APPLIOATION FILED 0011.21. 1908.

a SHEETS-SHEET s.

Patented Sept. 28.,

FRANZ THINKS, or BRUNSWICK, GERMANY CALCULATING-MACHINE.

Specification of Letters Patent. Patented. Sept. 28, 1909.

Application filed October 21, 1908. Serial No. 458,873.

To all whom it may concern: Q

3e it known that I, FRANZ. THINKS, engineer, subject of the Emperor of Germany, residing at Brunswick, Duchy of Brunswick, Empire of Germany, have invented certain new and useful Improvements in Calculating-lilachines, of which the following is a specification.

This invention relates to improvements in calculating machines, and more particularly to machines of that class comprising two revolution counting mechanisms, one of which is used in performing ordinary calculating operations, and the other used when performing what is known a simplified calculating operation. An example of a machine of this class" is described in my copending application Serial Number 406,442 filed December 14, 1907. In this machine the counting mechanism used for performing simplified operations is ')rovidcd with tens transferring means, and each ol its counting wheels has two series of figures which are exposed through a peep hole or sight opening formed in a'slide movable on the cover of the casing. To insure a tens transfer at the proper time, though the machine crank is rotated in opposite directions when performing an addition or a subtrac tion, the figures of both series of the counting wheels are displaced relatively to each other the distance of one division, in such manner that in the initial position and when the slide is set for performing an addition, the zeros of the series of figures designed for additions are visible, the slide being shifted to expose the nines oi the series of figures for performing subtraction. ll the machine is operated to pcrforn'i simplified subtraction the nines ot' the counting wheel will therefore be shown or exposed through the peep holes or sight openings of the slide instead of the zeros as in the initial position for performing division. To arrange the machine for sul'itraction the crank must be rotated in a proper direction to move the zeros in front of the peep holes through the medium of the tens transferring means, and by so rotating the crank the remaining counting mechanism, which has its driving mechanism opcratively connected with the first operated coun'tin the distance 0 a value. Therefore, in the subtraction position of the slide, a position of rest of, both counting mechanism cannot be obtained except by means of the zero setmechanism, is also moved" ting shaft of an ordinary counting mechanism.

The operation as just specified is for many reasons disadvantageous, and the object of the present improvement is to avoid the necessity for such. operation or dispense with a special crank revolution or a zero setting operation. In this improved machine means are provided whereby a counting wheel upon the first revolution of the crank in the'direction required for performing subtraction is rotated the distance of two values instead of one value, the'first part of the rotation being cite-ted in the. usual manner by means of a well known movable tooth means setting the zero to the counting wheels at the rear of the peep holes, and the remaining revolution is ett'ectcd by additional means which moves the numeral l so to be visible through the first peep hole, according to the single revolution of the crank.

To more clearly illustrate the invention, several (.XUIUPICS eml'iodying the same have been shown in the accompanying drawings, and therein Figure 1 is a transverse vertical section on the line 1--1, Fig. 2, and embodying the features oi the invention. Fig. 2 is a partial longitudinal section of the machine. Fig. 3 is a longitudinal section oi a portion of the mael'iine illustrating a modification. 7 is a view similar to Fig. 3, illustrating a further modification. Fig. 5 is a cross-sectional view through a portion of the mechanism shown by Fig. -l. liia'. G a detail Fig. 4-

elevation illustrating a modification. of the push rod used in Fig. 4. Fig. 7 is a detail cross-sectional view on the line 7T, Fig. 2. Fig. 8 is a detail ('i'oss-sectioi'nil view on the line 8 8, Fig. 2.

Referring particularly to Figs. 1, 2, 7 and 8. the well known driving wheel (1 for the t counting mechanism d is mounted on the driving shaft l.whieh is operated by the machine crank 71, and said said driving wheel is in the present instance provided with an additional orsecond tooth e which is normally in inoperative position with relation to thecountmg wheel adjacent to the said driving wheel, the said additional tooth when in operative position acting but once upon the first revolution of the crank, or by a single revolution of the crank, conjointly with the tooth (1,, and after the said tooth has performed its fui'ictionit is automatically thrown out of operation. By this means the counting Wheel, by a single revolution of the crank in the direction of the arrow 'as shown by Fig. 1, in performing subtraction advanced the distance of two values, namely the distance of one value by she operation of the tooth 6 moving the zeros of the counting Wheels in front of the peep hole or sight opening k, and a second value by the operaiion of the tooth a, the latter by single revolution of the machine crank moving the numeral 1 in front of the first peep hole or sight opening. As the two counting mechanisms are connected for relative operations they will both show the numeral 1 throu h the aciustion of the mechanism just exp ained or the two teeth P 1d their cooperating uhin the calculating machine, as in n" sclosed by my application herein- ?e noged, is longitudinally shifiuhle ng mechanism m at a point below the V ting couniing mechanism embodying ihe counting wheels (Z with the two sets of n rnls thereon as hereinbefore referred to. Conne he in the counting mechzi ism m, and extending lonfi itudinslly of the machine is an endless hana or chain is which moves over suitable grooved pulleys or shcar'es and is maintained at a proper degree of teutncss. Qonnccted to the endless bend or chain 7": is fork is which engages and is shifiable on the crunl; shsf: Z and the two members 01" the fork einhrax-c the driving wheel 0, as clearly shown I By this means the driving wheel c iiifiedor advanced the same distance as one main counting mechanism m but in a dion opposite to the latter, for example, if e main counting mechanism is shifted to right he driving wheel 0 is correspondxv shifted to the left owing to the inter- "Lion and ucliuci'ion of the cndle band or in in. The a oi? the drivingwheel c to operate with orezr C, but the tooth e is normally posirion us lo pass or he out of on r atively to the said teeth o s n c oi. angular con-Loni, swings or on a vertical pivot carried by the cl c and embodies an angular arm (2 by eans or which the said tooth is posii'ioncd P e the teeth d by devices which will he e'xphined. Extending through the of the casing of the machine adjacent to counting wheel 0 is a push button 0 hsvng on elongated stem with an inner angular c, the push button being exterior-1y archive and succ ed by a coiled spring 0' retractilie said button and its stem or to score SEEIHQ to normal position when re leased. The stem of the push button at an intermediate pointis provided with a catch notch 0 d in advance of said notch using the push huh J. K L118 and located within the c ton stein has :1 finger r pro ecting upwardly iherefrc n in engz ge u projection or iappei f SilCi f 'WillCl.

is movable '10 control the open and. closed condiiiou of i'ihe peep holes or s19 formed in ihc casing over the c', slice 7 having openings therein extent thun tie peep holes or in. the casing of the machine, to disclose one sci". of

lion or tappebf :in i he 1' series of nu- 85 inerals on the counting exposed in accordance with (he movement of the said wheels.

it is necessary to col? he push butiion in its depressed goes i to c it to perform 90 is function during inc? ouhi zion of the machine creni: to avoid the necessity of the operator holding the said button and its stein depressed, and to nccoi'nplish this object a latch bar p mounted. for vertical 9 sliding movement against the inner surface of the end of the casing llirough which the said push buiton and ii are operative, the said latch he: @iiilrCEGfil against p which normally 100 tends to force the sch m1- upwcrdly. The upper end of the iji'ljbill' p continually of the stem 0., and when the sicn: of

bears against the lower portion oi the push hiiicu the button is force inwardly c suliicicnt distance the i.v uses the upper end of the latch s ige the notch 2 and. looks the push iuihun for a certain pcri'd or i revolution of the niucliine crank has h u mal'position and the V is thrown ou or J relation to the 111 teases movement of the slide to the left as just explained simultaneous y with the disposition of the tooth e in operative relation to the teeth d is effected when subtraction is to be performed and the said slide in this position displays the left hand series of digits on the wheels cl. hen the push button 0 and its stem are released and return to normal position the slide f may be manually shifted to the right by the operator.

In the operation thus far described, the second tooth cannot be disposed in operative position except when the units counting wheel is used, or in other words this particular mechanism embodyin the second tooth is solely associated with the units counting wheel, and it would not be practicable to arrange the push button so that it would operate with the higher values or to provide it with an abutment for each of the value positions because when operating the second tooth e in a higher value position, only this value position and the succeeding higher value positions would be moved from nine to zero by reason of the fact that the tens transferring mechanism is operative solely for actuating the higher value position from a lower one. Therefore, the construction thus far described can be used merely in such cases in which simplified subtraction is preceded by a usual subtraction, but not vice versa.

To adapt the invention to all the possibilities of calculation, that is, to such cases in which the calculating operation begins directly with the simplified suhstraction in a higher value position, the mechanism shown by Fig. 3 is provided and is as follows: In this form of the machine the tooth e is independent of the driving wheel a and is carried on a disk 2% or on an analogous device secured to the shaft I so that the said tooth e is in position to engage the teeth (1 of the first counting wheel d which is of the lowest order, the said tooth e being preferably thrown into and out of operative relation to the teeth (1 by the same mechanism disclosed by Figs. 1 and 2 and hereinbefore fully described.

Instead of the form of tooth-c which has a pivotal or swinging action, any other displaccable tooth may he provided, forexample, a radially displaceable tooth thrown into operation y means of a rotary cam disk adjacent to the tooth disk, the said cam disk for the purpose of throwing the tooth out of operation is stopped'at the end of a revolutionof the machine crank and operates to retract the tooth. An example of this modification is illustrated by Figs. 4 to 6 and the mechanism is as fol-lows; Opposite the teeth d of the first counting wheel d a disk '11- is secured to the shaft Z, the said disk being provided with aradially movable tooth a controlled by an adjacent rotary ed on the cam disk u cam disk n. Then forcing the push button and its stem inwardly 1n the direction of the arrow, such operation causes the tooth e to be projected outwardly from the circumference of the disk u bymeans of a beveled face 0 of the stem of the push button striking against a lug u? of the cam disk at and rotating thelatter, and after this projection of the tooth e ensues and the teeth d have been engaged to effect the operation of the first counting wheel as desired, the continued rotation of the shaft I through the-operation of the machine crank will cause an automatic retraction of the tooth e l by means of a spring-pressed lever a "mountthe said lever strik ing against the stem of the push button, the

latter still being held projected inwardly by mechanism hereinbefore explained, the latter operation taking place while the disk it continues to rotate. After fully withdrawing the tooth 6 into the disk u, and upon further rotation of the machine crank b, the resistance of the spring oholding the lever v: in its locking'position is overcome, and the said lever v swinging about its pivot v passes below the stem of the push button, the said stem being released by a cam or eccentric q, as hereinbefore explained.

To set forth the invention more learly, two examples of calculating operationsare now given, one of which examples relates to multiplication, and the other to simplified pubstraction of products, and are as folows:-

First ewample: Simplified multiplication.

Problem: 99. 153.

Calculation: 100 453 453-.

Solution; (1) Set the machine to show 453 on the adjusting mechanism. (2) Move the carriage carrying the main counting mechanism the distance of two Values to the right. (3) Perform a complete rotation of the crank in the plus direction, which means multiplication with 100. The main count-- ing mechanism now shows the number 45300, and each of the revolution counting mechanisms shows the number 100. (4:) Return the carriage of the main counting mechanism to initial position. (5) Perform one rotation of the crank in the minus direction. Now the main counting mechanism shows the correct result, that is 45300-453: M8 17. The revolution counting mechanism (1 shows the number 99. The indication of the other revolution counting mechanismis not controlling.

Second example: Abbreviated subtraction.

I astransmit the same to the main counting mechanism by rotating the crank the plus direction. (2) Set both revolution counting mechanisms to zero, andsuhstitute, on the setting mechanism, the number 1000 by the number 87. (3) Move the carriage of the main counting mechanism the distance of one value to the right. (42) Rotate the crank in the minus direction, that subtract 10.87. The main counting mechanism shows the numbe' t30 and therevolution counting mechanisms the number 10. (5) Return the carriage carrying-the main counting mechanism into initial position. (6) Rotate the crank in the plus direction, that is, perform the addition of 87. N ow the main counting mechanism shows the correct result 217, and the revolution counting mech anism provided with tens transferring means shows the number The indication of the other revolution counting mechanism is not controlling.

What is claimed is:

1. In a calculating machine, the combination with a counting; nunhanism provided with counting disks having two series of figures displaced relatively to each other the distance of one value, and operating means for said counting mechanism, of normally inoperative means to actuate said counting mechanism, means to operatively connect said normally inoperative means with the operating means, and automatic means to throw the same out of operation after the first revolution of the operating mean 7 2. In a calculating machine, the combination with a counting mechanism provided with counting disks having two series of figures displaced relatively to each other the l I I l l I l a i i e one value, and operating means i counting mechanisnnci' normally ino e ive means to actuate said counting means to operatively connect saic normally inoperative means with the operat'ng means, automatic means to throw the ame out or" operation after the revl of the operating means, a slide adapt ed to cover either one of the ser of figures on said disks, and an operative connection between said slide and said means for operativel'y connecting the normallg inoperative means with the operating means.

3. l n a calculating machine, the combination with a counting mechanism pro (led with counting disks having two series of iig- 'ures displaced relatively to each other the distance of one value, and operating means for said counting mechanism, or". normal inoperative means to actuate said countii 5 mechanism, said means being located inde pendently of the driving means for the counting mechanism and adjacent to the counting wheel of the lowest order, means to operatively connect said normally inopen ative means with the operating means, and automatic means to throw the same out of operation after the first revolution of the operating means,

In testimony whereof I have hereunto set my hand in presence of two subscribing Witncsses.

FRANZ, THINKS.

Witnesses:

PAUL Boon, WILHELM Lnnnnn. 

